Page 1028 - Foton Workshop Manual - Auman EST-M

FR-28 Frame, Suspension and Tire - Rear Suspension

Rear Suspension Assembly

Overview

Function of rear suspension
1. T ogether with the tyres, absorb and reduce various trembling, swinging, vibrating, etc. to ensure the safety
of passengers and goods so as to improve driving stability
2. Transfer the driving and braking force produced by the friction between the wheels and ground to the
chassis and body

3. Support the body on the axle and keep suitable geometrical relationship for the body and wheels. It
impacts greatly on the main performance of vehicle, such as driving smoothness, operating stability, fuel
economy, etc.
4. Because of rough road, speed change and other reasons during driving, the vehicle will vibrate. The
spring deformation will increase, which will shorten the life of plate spring, body, frame and other parts

Precautions
1. Prohibit excessive overload, unbalance loading and uneven force. Otherwise, the camber of plate
spring will reduce and elasticity will become weaker.

2. Prohibit sudden braking, particularly when it is fully loaded. Deal with emergencies in advance.
Otherwise, the front plate spring may be broken due to too much bending force
3. Prohibit too high speed, particularly when driving on a rough road. It will increase the deformation range
and frequency of plate spring, thus increase the bending force and fatigue
4. Prohibit sudden turn. When making sudden turn, the vehicle will produce centrifugal force and
increase the load of outer plate spring. The more sudden the turn, the bigger the load and the more
damage

5. The plate spring must be maintained regularly. When dismounting for inspection, coat graphite
grease on each leaf to avoid or reduce fatigue, wearing and rusting of plate spring. Therefore, need to
perform service regularly to extend the life

FR-028